STi

1) Check to see if your tires are inflated to the proper setting.

2) Check all the fluids in the engine bay including the engine oil,
antifreeze in the radiator, and transmission oil.

3) Specifically ask the dealership to check the oil levels in the
differentials (some STis have been delivered with low levels of oil
which were not discovered until significant mileage had occurred.)

4) Did I mention floor mats?

5) Verify that you receive the little ID tag that identifies your
STi's key code in the event you need to request one in the future.

6) Check for scratches, dings, paintwork on body, curb rash on wheels.

7) Check for low miles. Less than 20 miles.